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FlyWeightFactory is responsible for creating and managing meta-units. When a client requests, the factory needs to check whether there are eligible objects in the current object pool. If so, it returns the existing object. If not, it creates a new object. FlyWeight is a superclass. When it comes to shared pools, It is easy to think of JDBC connection pooling in Java, Considering the characteristics of each connection, It is not difficult for us to sum up: Applies to several objects that are shared, They have some common attributes, Take the database connection pool as an example, url, driverClassName, username, password and dbname, these attributes are the same for each connection, so it is suitable to use the meta-sharing mode to process, build a factory class, take the above similar attributes as internal data and the others as external data, and pass them in as parameters when calling methods, thus saving space and reducing the number of instances.该剧以远古帝王大舜传奇曲折的一生为主线，讲述了尧、舜、禹三代历经磨难、治理水患，为民造福、成就伟业的故事。本片讲述了“心理治疗师”Dr.宝（刘嘉玲 饰）与两位女儿嘉欣（卫诗雅 饰）、嘉琪（王菀之 饰）以及嘉欣男友梁华生（任达华 饰）一家人之间姻差缘错、啼笑皆非的欢乐喜事。香港逾百位大牌艺人齐聚荧幕，狗年贺岁！本故事讲述了一个在中越边境，以副连长、一排长为首的九人集体，冒着敌人的密集炮火来到三号哨位——一个天然山洞，开始了三个月艰苦的战斗生活。先是闷热，没有水。疾病和潮热时刻威胁着战士们，但他们仍保持乐观的精神。长期缺阳光、缺营养、缺睡眠，使战士们全染上了疲劳综合症。副连长回忆起后方烈士的妻子严萍萍，在丈夫死掉后坚强的活下并抚养起烈士的后代。小顾不幸触电身亡。战士们背着小顾，走在红色的泥浆地上。副连长和严萍萍在一排皮墓碑前寻找烈士的亡灵。　　这晚要杀的最后一个人是助理检查官，她曾是麦克斯的顾客。麦克斯决心保护她……电视连续剧《金凤花开》以白族姑娘金凤和访张东海的爱情故事为主线，塑造了一群不同、不同经历、共同为平等与幸福而卓越奋斗的少数典型人物，揭秘少数传历，讲述了一个鲜为人知的故事。全剧以新立初中向地区派出团为背景，全景式展现新关系和的光辉成就，具有极强的思想、艺术和知识，是一部以宣传为主律的优秀金凤花开剧情介绍剧情简介 金凤花开播放的电视剧，对当前开展结育，维护国和有着重大的现实意义。